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A heat engine does 376.88 J of work per cycle while exhausting 648.92 J of heat to the cold reservior. If a Carnot engine operating with a hot reservior temperature of 401.51 oC has the same efficiency, what is the cold reservior temperature in degrees Celsius?
A stunt pilot performs a circular dive of radius 715m. At the bottom of the dive pilot has a speed of 265 m/s which at that instant is increasing at a rate of 15 m/s2(along the direction of vector B) What total acceleration does the pilot have at ..
A bullet of mass 0.0022 kg initially moving at 503 m/s embeds itself in a large fixed piece of wood and travels 0.71 m before coming to rest. Assume that the acceleration of the bullet is constant.
At t = 0, a particle leaves the origin with the velocity of 9 m/ s in the positively direction and moves in the x y plane with a constant acceleration of (2.0i - 4.0j) m/ s2. At the instant the x coordinate of the particle is 15m, what is the spee..
A particle moving along the x axis in simple harmonic motion starts from its equilibrium position, the origin, at t = 0 and moves to the right. The amplitude of its motion is 1.70 cm and the frequency is 1.30 Hz.
A simple pendulum is made from a L long string and a small ball, mass=m, attached to its free end, Write the lenght of the curve s(t) and specify the time period for small oscillations
A loudspeaker of mass 18.00 {rm kg} is suspended a distance of h = 1.20 {rm m} below the ceiling by two cables that make equal angles with the ceiling.
Two parallel metal rods form a plane inclined at 20 degrees to the horizontal. The upper end of the rods are connected together by a resistor of 166ohms, What is the maximum speed of the bar
A car is traveling at 29m/s when the driver spots a large pothole in the road the distance 37 m ahead. She immediately applies her brakes. If her acceleration is -6.60m/s2, does she manage to stop before reaching pothole.
What are the lowest and the highest frequencies. calculate the acceleration of the crate.
What phase difference between two otherwise identical harmonic waves, moving in the same direction along a stretched string, will result in the combined wave having an amplitude 1.4 times that of the amplitude of either of the combining waves? Exp..
A car is moving at a constant velocity for 3s until it is 3.0 m from a yellow light. It slows to a stop in 2.0s. It remains stopped for 50s and then speeds up for 2s.
The frequency of an opera singer is 450 Hz. Assume the speed of sound in air is 340 m/s. What is the frequency heard by an observer who is running down the road towards the opera singer with a speed 25.0 m/s.
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